The JR-TT2B05-GU kit contains machined gun-metal aluminium rear suspension arms made as a scale aftermarket replacement for the Tamiya TT-02B chassis. These aluminium arms replace the original plastic items to provide a firmer mount and more repeatable suspension behaviour.
Functionally the arms act as rear suspension links that influence roll centre, track stability and the way the rear reacts to shock damping and spring changes. They are useful when adjusting rear geometry for handling balance or when replacing worn plastic arms with more durable parts.
Fitting notes: confirm orientation and that mounting holes are aligned before final tightening, reuse original pins and retainers if they fit, and check the suspension through its full travel to ensure no binding. Routine checks of fasteners and mating surfaces maintain consistent alignment.
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